Our AF chief mentioned in a newspaper that the drones won't cost any less than future fighters do. Wonder if he was right.

Doubtful. A manned fighter will be much harder and expensive to match spec for spec performance with a UCAV. An unmanned system is a lot cheaper because it doesn't have to be "man-rated", or carry an ejection seat & life-support etc. Plus you add in the long term cost of selecting, training, and paying very specialized operators (fighter pilots) and drones are a lot cheaper.